3.下列活动对维持生物圈的碳 氧平衡起了重要作用的是 A.植物的�吸作用b.焚烧秸秆c.植物的光合作用d.火力�电——青夏教育精英家教�—— Template




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tomski3.下列活动对维持生物圈的碳 氧平衡起了重要作用的是 a.植物的�吸作用b.焚烧秸秆c.植物的光合作用d.火力�电——青夏教育精英家教�—— coloring